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Issue 10, 2019
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A visible-light-driven photoelectrochemical molecularly imprinted sensor based on titanium dioxide nanotube arrays loaded with silver iodide nanoparticles for the sensitive detection of benzoyl peroxide

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Abstract

A novel ultrasensitive photoelectrochemical sensor for benzoyl peroxide (BPO) was constructed under visible light irradiation. A novel nanostructured material made of molecularly imprinted polymer (MIP)-modified silver iodide nanoparticle–titanium dioxide nanotube arrays (AgINPs–TiO2 NTs) was designed as a photoactive electrode (denoted as MIP@AgINPs–TiO2 NTs). AgI-sensitized TiO2 nanotube arrays were prepared by a simple dissolution–precipitation–calcination process and then employed as a matrix to graft the MIP recognition element. Such a newly designed molecularly imprinted photoelectrochemical sensor exhibits high sensitivity and selectivity for the determination of BPO. The photoelectrochemical analysis is highly linear over the BPO concentration range from 1 × 10−12 mol L−1 to 5 × 10−10 mol L−1 with a detection limit of 2.53 × 10−13 mol L−1 (S/N = 3, n = 11). The sensor designed based on a low cost and highly sensitive assay was successfully applied in the determination of BPO in spiked samples.

Graphical abstract: A visible-light-driven photoelectrochemical molecularly imprinted sensor based on titanium dioxide nanotube arrays loaded with silver iodide nanoparticles for the sensitive detection of benzoyl peroxide

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Article information


Submitted
02 Feb 2019
Accepted
02 Apr 2019
First published
02 Apr 2019

Analyst, 2019,144, 3405-3413
Article type
Paper

A visible-light-driven photoelectrochemical molecularly imprinted sensor based on titanium dioxide nanotube arrays loaded with silver iodide nanoparticles for the sensitive detection of benzoyl peroxide

L. Zhong, X. Li, R. Liu, X. Wei and J. Li, Analyst, 2019, 144, 3405
DOI: 10.1039/C9AN00234K

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